senator leland yee says we're not going far enough. his bill to add gun control actually failed last year. this time around, he is facing power gun rights lobbyists but says he is not afraid of a tough fight. 23 years ago the cleveland elementary school shooting left five kids dead and 29 wounded. it's now known as the stockton massacre. and it led to an outright ban on assault weapons in california. we though it couldn't get any worse. >> the connecticut shooting is a wake-up call for america. >> reporter: until now, with 20 children shot and killed in newtown, connecticut, senator leland yee says it's time to stop the mayhem. he wants to reintroduce the bullet button ban which failed last year. the bullet button allows gun users to get around the state ban on detachable magazines because you can simply use a tool in this case a bullet to release the magazine. >> it's as if we don't have an assault weapons ban in the state of california with the bullet buttons assault rifle. what you can do is buy a magnet and you can easily load and